HighSierra86
New User
Hi guys, I have a no-fire condition on an H4 magneto. Tractor is a 45' H that I rescued last summer. Been sitting for 30 years. Came with a new, (rebuilt) magneto that had never been installed. The mag has been sitting in a box on its side since at least 1993.
I installed and timed the magneto with no luck. The timing went fine but I have no spark at all. Replaced and adjusted points and condenser. I replaced the coil also as it seemed to me to be grounding out on the wire to the cond. New coil tests exactly the same, close to 0 ohms from primary wire to grounding strap. I don't have the blue ribbon manual, but I was told this is normal? .5 ohms to ground? Top button to wire measures 11.5 ohms.
I have verified no shorts between the cond and points with the coil disconnected.
Is there something I'm missing? only odd thing I noticed was an oil-like residue that had seeped out of the main shaft on the points side of the mag. Something from sitting on its side for so long? Or maybe some kind of assembly lube, seeing as it was rebuilt.
And hints or tips would be greatly appreciated. I'm loosing sleep trying to figure this one out! Thanks in advance, Nick.[/img]
I installed and timed the magneto with no luck. The timing went fine but I have no spark at all. Replaced and adjusted points and condenser. I replaced the coil also as it seemed to me to be grounding out on the wire to the cond. New coil tests exactly the same, close to 0 ohms from primary wire to grounding strap. I don't have the blue ribbon manual, but I was told this is normal? .5 ohms to ground? Top button to wire measures 11.5 ohms.
I have verified no shorts between the cond and points with the coil disconnected.
Is there something I'm missing? only odd thing I noticed was an oil-like residue that had seeped out of the main shaft on the points side of the mag. Something from sitting on its side for so long? Or maybe some kind of assembly lube, seeing as it was rebuilt.
And hints or tips would be greatly appreciated. I'm loosing sleep trying to figure this one out! Thanks in advance, Nick.[/img]